Nutrafin Nitrite reagent #2 refill, 10 mL (0.3 fl oz)

Nutrafin Nitrite reagent #2 refill is for use with Nutrafin Nitrite Test (0.0 - 3.3 mg/L). Nitrite should be tested on a weekly basis as it is a toxic and potentially lethal nitrogen compound for fish. Format: 10 mL (0.3 fl oz).